Doughnut making apparatus



Jan; 10, 1939. J. KORPAN 2,143,353

' DOUGHNU'i' MAKING APPARATUS Filed Feb. 17, 1938 III] miiii m MINI-ll Ill]:

. Tm 1 H TMNL III rj i h Patented Jan. 10, 1939 UNITED STATES PATENT OFFICE.

assignments, to Master Doughnut Machine Company, Ghicago, Ill... a corporation of Elinois Application February 17, 1938, Serial No. 191,048

6 Claim.

This invention relates to ailment forming spparatus and particularly apparatus for formin doughnuts or the lik It is one of the objects of the present invention to provide a device for forming doughnuts, pastries, confectionery or the like of the required shape, which apparatus shall be simple and economicul of construction, reliable in operation, and which may he made suficiently small and portable ior domestic usage.

It is a further ohject oi the present invention to make a portable apparatus which may be used for forming doughnuts or the like, and which is of such size and mode of operation that-it may he held in the hand and manually operated to efiect the desired result without unduly tiring the cos-rotor.

it o. still object of the present invert tion to e1. doughnut forming machine of such time that it may he held in the hand during normal use, and a. continuous operation of on operating element will cause operation of dough odvencing memher intermittently, and will cause opez'otion oi a dough forming or cutting memher. the operation of the two members being so correlated that the advance of the dough is stopped durlhge proper portion of the motion oi the cutting member. the dough advancing rnemher being releesed during a portion of the strolte oi the cutting member.

it is a still. further object oi the present invention to provide a device of the above choir ecter which chm be extremely durable and oil such construction as to be capable of lacing read ily talren sport for thorough cleansing.

The attalmnent oi the above objects of the present invention will be apparent when taken in conjunction with the drawing forming a, part thereoi.

in the druwiog:

Figure l is o, longitudinal sectioucl view through c. doughnut looking apparatus com shooter? in. accordance with the present invention, seirl view being taken along the line i-i oi 2; end

Figure 2 is a longitudinal sectlonal'view taken along the line il--t of Figure l.

The apperutus comprises u'holiow cosine l oi u generolly rectougulor shape, having a circular extruding opening i! one end and entirely open ot the opposite end. fine top of the casing is closed Toy it cover ll which slides between the side walls l-lland under a top wall 5 that has a lorge rectongulur opening l therein. A cutting till disc it is mounted on s rod ii that is slldohle longitudinally in the casing i, along the center thereof. The cutting disc is guided adjacent the bottom end by a, narrow cross bar ll extending across the extruding opening 2, and welded or otherwise secured in place and is movable from the position indicated in Figure l, where it permits the outward flow of dough or the like from the opening 2, to a position illustrated in Figure 2 wherein the cutting disc abuts against the cylindrical mouth it to cut the dough that has been extruded through the opening ii.

A rectangular plunger plate it fits snugly on the interior of the casing l and is longitudinally slidable in said casing. The plunger plate has a central cylindrical opening through which the rod i is freely slidahle. A gear .cl; to having gear teeth ii is secured to the basic oi the plunger plate below the rod ii maintains the plunger plate in a vertical position well as moves the same within the casing.

A piste Elli at the open rear end of the casing i maintains the rigidity of the hex-like structure. The rack it and the rod are freely slidahle through the plate iii. iJ-shapecl clip 2i hes the bight portion thereof welded or otherwise secured to the plate ill and hes a, pair of projectine arms lie-i l which serve as guides for a rotatable shaft that has a gear sector it locked thereto. by e. screw The shaft it has pin is extending therethrough and locked. in place and .is adapted. to receive a removable handle it which fits over the shaft and has e pair of slots which embrace thepin so that upon rotation oi the handle it the shaft 25 is rotated. 0n the outside of the arm 24 the shaft 25 has a crank til locked thereto, which crank is joined, by means of a connecting rod 38, with a collar ill? that is keyed to the rod ii. The connecting rod is pivoted to the cranir and to the collar. The collar it has s. downwardly projection portion it huving an opening therein through which the reels it is freely sliclabie so that the collar guides the outer end of the reels.

The gear sector it has only four teeth thereon so that ii the handle is turned through one complete revolution the rack it is advanced four teeth, being advanced only through approximate ly one-fourth of the turning movement of the handle and remaining substantially stationery during the other three-fourths of the turnin movement of the handle. During each complete revolution of the handle the crank it and connecting rod it cause the rod ill to move first in one direction and then in the opposite direction. It is thus apparent that upon continuous rotation of the handle the cutting disc I0 is reciprocated from the position illustrated in Figure 1 to the position illustrated in Figure 2 and the plunger plate I3 is advanced ina step by step manner. When the cutting disc moves in the opening direction, from the position illustrated in Figure 2 towards the position illustrated in Figure 1, the plunger-plate I3 is being advanced to push the dough through the extruding outlet. The advance of the plunger plate l3 ceases slightly before the cutting disc has reached the position illustrated in Figure 1. plunger plate l3 remains stationary and the cutting disc |0 is retracted to cut a piece of the dough that has been extruded into the, position illustrated in Figure 1. During the return movement of the cutting disc the plunger plate is not locked in position, since the circular non-toothed part of the gear sector 26 is over the rack l'l. It

is merely held against upward movement by the friction between the plunger plate l3 and the walls of the casing and the friction of the dough with the walls of the casing.

To use the apparatus, the plunger plate is moved to the extreme position indicated in dotted lines in Figure 1, the cover plate 3 is opened, and dough is placed in the container to fill the same between the plunger plate and the cutting disc I2, the cutting disc l0 being in the closed position.

Thereafter the cover plate 3 is moved to its closed position and the apparatus is ready for use. The.

apparatus may be held in the left hand in a vertical position and-the crank turned with the right hand, the apparatus being held over the container in which the doughnuts are to be dropped. It

is thus merely necessary to turn the handle 28 continuously in one direction. With each revolution of the handle the plunger plate I3 is advanced an amount suflicient to cause the extrusion of the necessary amount of dough for making one doughnut, and the cutter disc I0 is operated to cut off the dough.

While I have here shown arrangement wherein the gear sector 26 has only four teeth, it is understood that a greater or lesser number of teeth may be employed.

In compliance with the requirements of the patent statutes I have here shown and described a preferred embodiment of my invention. It is, however, to be understood that the invention is not limited to the precise construction here shown, the same being merely illustrative of the principles of the invention. What I consider new and desire to secure by Letters Patent is:

l. A dough forming and cutting apparatus comprising a container for dough, said container having an extruding outlet, dough cutting means at said outlet, a plunger for advancing dough in the container, a rotary element, means associated with the rotary element for advancing the plunger during only a fraction of each revolution of the rotary element and releasing the plunger during the remainder of each revolution of the rotary element, and means associated with the rotary element for reciprocating the cutting means to open and close the outlet.

2. A dough forming and cutting apparatus comprising a container for dough, said container having an extruding outlet, dough cutting means at said outlet, a plunger for advancing dough in the container, a rotary element, means associated with the rotary element for advancing the plunger during only a fraction of each revolution of the rotary element and releasing the plunger during the remainder of each revolution of the Thereafter the rotary element, and means associated with the rotary element for reciprocating the cutting means to open and close the outlet, said two last named means which are associated with the retary element being so correlated that the closing movement of the cutting means takes place during the portion of the revolution that the plunger is released.

3. A dough forming and cutting apparatus comprising a container for dough, said container having an extruding outlet at one end and an end plate at the opposite end with the sides of the container projecting beyond said end plate to form a pocket, a plunger between the end plate and the outlet for advancing the dough in said container to said outlet, a cutter closing said outlet and movable to an open position, a rod supporting the cutter and extending through the container and through the end plate into said pocket, a rack connected to said plunger and extending into said pocket, operating mechanism in said pocket and including an operating element and a driving connection between said element and said rod and rack. I

4. A dough forming and cutting apparatus comprising'a container for dough, said container having an extruding outlet at one end and an end plate at the opposite end with the sides of the container projecting beyond said .end plate to form a pocket, 2. plunger between the end plate and the outlet for advancing the dough in said container to said outlet, a' cutter closing said outlet and movable to an open position, a rod supporting the cutter and extending through the container and through the end plate .into said pocket, a rack connected to said plunger and extending into said pocket, operatingmechanism in said pocket and including a rotary element, a crank and connecting rod between the element and the rod for reciprocating the rod upon rotation of the element, and gearing between the element and the rack for advancing the rack with each revolution of the element.

5. A dough forming and cutting apparatus comprising a container for dough, said container having an extruding outlet at one end and an end plate at the opposite end with the sides of the container projecting beyond said end plate to form a pocket, a plunger between the end plate and the outlet for advancing the dough in said container to said outlet,'a cutter closing said outlet and movable to an open position, a rod supporting the cutter and extending through the container and through the end plate into said pocket, a rack connected to said plunger and extending into said pocket, operating mechanism in said pocket and including a rotary element, a crank and connecting rod between the element and the rod for reciprocating the rod upon rotation of the element, and a driving gear driven by said element and in driving engagement with the rack during only a fraction of the motion of the gear whereby the rack is advanced in a step by step manner upon continuous rotation of said element.

6. A dough forming and cutting apparatus comprising a container for dough, said container having an extruding outlet at one end thereof, a movable cutting disc closing said outlet, a rod supporting said disc and extending through the container'to the opposite end thereof, a rotary element at said opposite end of the container, means including a crank and connecting rod connecting said rotary element with said rod so that ble by the element and in driving engagement.

upon rotation of the element the rod and the cutting disc are reciprocated to open and close said outlet, :3. plunger in said container movable towards the outlet to force the contents of the container through the outlet, a. rack connected with said plunger for actuating the same, and a driving connection between the rack and the element for advancing the rack in a step by step manner upon continuous rotation of said element,

in said driving connection including means rotatawith the rack during only a fraction of each revolution of the element, said last named means being so correlated with said crank and connecting rod that the closing movement of the cutting disc takes place during the portion of the revolution of the element when said last named means is out of driving engagement with the rack.

JOHN KORPAN. 

